As we all know, the ranger has been weakened greatly by GGG in some aspects. But we still can build a stronger character by using a critical physical damage bow. In the following, I will give you detailed tips on weapon choosing.
Gem choosing
Dealing with Boss or Physical reflect monster: Frenzy + Faster Attack + Faster Casting + Added Cold Damage / Power Charge on Critical
200% critical strike chance: Split Arrow + Faster Attack + Faster Casting + Power Charge on Critical. You only need 4-link equipment. One power charge in passive tree + four power charges contribute to 200% critical strike chance.
Slow the movement of monsters: Ranger Attack Totem + Rain of Arrows + Faster Attack + Added Cold Damage. The combo can make the monsters be frozen when you launch an attack. Compared with Split arrow, the combo is really better.
Improve survivability: Cast When Damage Taken + Motel Shell + Immortal Call + Endure Cry, Lightning Warp
How to choose a high critical strike chance bow?
more information about the article on Path of Exile Patch 1.1.2b: Ranger Changes and How to Choose Critical Physical Damage Bow Effectively